LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
subroutine csscal ( integer  N,
real  SA,
complex, dimension(*)  CX,
integer  INCX 
)

CSSCAL

Purpose:
    CSSCAL scales a complex vector by a real constant.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
November 2011
Further Details:
     jack dongarra, linpack, 3/11/78.
     modified 3/93 to return if incx .le. 0.
     modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 54 of file csscal.f.

54 *
55 * -- Reference BLAS level1 routine (version 3.4.0) --
56 * -- Reference BLAS is a software package provided by Univ. of Tennessee, --
57 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
58 * November 2011
59 *
60 * .. Scalar Arguments ..
61  REAL sa
62  INTEGER incx,n
63 * ..
64 * .. Array Arguments ..
65  COMPLEX cx(*)
66 * ..
67 *
68 * =====================================================================
69 *
70 * .. Local Scalars ..
71  INTEGER i,nincx
72 * ..
73 * .. Intrinsic Functions ..
74  INTRINSIC aimag,cmplx,real
75 * ..
76  IF (n.LE.0 .OR. incx.LE.0) RETURN
77  IF (incx.EQ.1) THEN
78 *
79 * code for increment equal to 1
80 *
81  DO i = 1,n
82  cx(i) = cmplx(sa*REAL(CX(I)),sa*aimag(cx(i)))
83  END DO
84  ELSE
85 *
86 * code for increment not equal to 1
87 *
88  nincx = n*incx
89  DO i = 1,nincx,incx
90  cx(i) = cmplx(sa*REAL(CX(I)),sa*aimag(cx(i)))
91  END DO
92  END IF
93  RETURN